| 单锥形纳米孔的制备和离子传导特性研究 |
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| 引用本文： | 朱晓蕊,王卫东,秦广雍,焦浈. 单锥形纳米孔的制备和离子传导特性研究[J]. 物理学报, 2013, 62(7): 77802-077802. DOI: 10.7498/aps.62.077802 |
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| 作者姓名： | 朱晓蕊 王卫东 秦广雍 焦浈 |
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| 作者单位： | 郑州大学物理工程学院, 离子束生物工程实验室, 郑州 450052 |
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| 基金项目： | 国家自然科学基金 (批准号: 30800204, 41101244) 资助的课题. |
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| 摘 要： | 用荷能重离子径迹刻蚀的方法在高分子多聚物膜 (PET) 上制备出单锥形纳米孔. 刻蚀过程通过监测跨膜电流来控制, 最大刻蚀电流Imax不同, 得到的锥形孔小孔孔径也不同. 研究单锥形纳米孔在KCl 溶液中的I-V曲线发现, 单锥形纳米孔的离子传导呈现出不对称特性, 该现象称为整流效应, 整流系数γ大小随纳米小孔孔径大小和电解质溶液浓度而变化.关键词：径迹刻蚀纳米孔离子传导整流系数
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| 关 键 词： | 径迹刻蚀 纳米孔 离子传导 整流系数 |
| 收稿时间： | 2012-10-08 |
Fabrication and electrolytic conduction of single conical nanopores |
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| Zhu Xiao-Rui,Wang Wei-Dong,Qin Guang-Yong,Jiao Zhen. Fabrication and electrolytic conduction of single conical nanopores[J]. Acta Physica Sinica, 2013, 62(7): 77802-077802. DOI: 10.7498/aps.62.077802 |
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| Authors: | Zhu Xiao-Rui Wang Wei-Dong Qin Guang-Yong Jiao Zhen |
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| Affiliation: | Henan key laboratory of ion beam bioengineering, Physical engineering college Zhen Zhou University, Zhengzhou 450052, China |
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| Abstract: | Single conical nanopores were fabricated by etching single-ion-irradiated polymer (ethylene terephthalate) (PET) films. The etching process was monitored by measuring the transmembrane current. A series of conical nanopores with different tip sizes were obtained at different maximum etching currents, "Imax". Results showed that it was possible to control the tip diameter by terminating etching at a certain Imax. The current-voltage characteristic of the nanopores in KCl solution was investigated. Results showed also that the ionic conduction was asymmetrical, this phenomenon is called rectification. The current rectification coefficient, was influenced by the tip size and electrolyte concentration. |
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| Keywords: | track-etching nanopore ionic conduction current rectification |
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